This short video and interactive assessment activity is designed to teach third graders about identifying the value of digits based on place value.

This short video and interactive assessment activity is designed to teach fourth graders about identifyinging the value of digits based on place value.

This short video and interactive assessment activity is designed to teach fourth graders about recognizing place value of digits in numbers ii.

This Teacher's Guide provides compelling questions to frame a unit of study and inquiry projects on the Reconstruction Era, includes NEH sponsored multimedia resources, activity ideas that include use of newspapers from the time and interdisciplinary approaches to bring social studies, ELA, and music education together, and resources for a DBQ and seminar.

COERLL has partnered with Rose Potter and Betsy Arnold to publish Recorridos-Don Quijote, a pair of openly-licensed books for the study of Cervantes’ Don Quijote in upper level Spanish courses, including AP. The student workbook, accessible online for free, deepens students’ understanding of the text through reading, pre-reading, and post-reading activities and glosses. The companion teacher support facilitates the teaching of Don Quijote through student-centered strategies and activities, historical and cultural information, quizzes, exams and more.

2010 marks the 400th anniversary of Galileo's astonishing sightings of features on the moon, stars, and moons around Jupiter that no one had seen before. Recreate these new ways of seeing and exploring from the materials and techniques Galileo had on hand, while you reflect on the times and works of Galileo. What was it like to improvise new ways of seeing and exploring from the materials and techniques on hand? What do we notice? What surprises us? How can we relate to past experience and ideas? What are we curious to research? How does our experimenting grow into our learning? Let your own curiosity drive your explorations.

Since before the creation of the first National Parks and Wilderness areas, the Mountain West region has provided ample recreational opportunities in its wide open spaces and rocky terrains. The mountains, deserts, and plains have given visitors the chance to commune with nature and participate in a plethora of outdoor sports and activities. Utah, in particular, but the rest of the Mountain West states (Colorado, Montana, Wyoming, and Idaho) generally, has unique natural settings for many recreational activities that continue to be enjoyed by tourists from across the world. The impact of tourism on the economy and development of the region has been largely positive. However, tourism also increases the human footprint in natural areas, landmarks, and historic sites. This exhibition describes the benefits to the region and its visitors, as well as some of the impacts that tourism has on the natural environment and other economic activities. This exhibition was created as part of the DPLA’s Public Library Partnerships Project by collaborators from Mountain West Digital Library. Exhibition organizer: Della Yeager.

This tasks gives a verbal description for computing the perimeter of a rectangle and asks the students to find an expression for this perimeter. Students then have to use the expression to evaluate the perimeter for specific values of the two variables.

This task is a natural follow up for task Rectangle Perimeter 1. After thinking about and using one specific expression for the perimeter of a rectangle, students now extend their thinking to equivalent expressions for the same quantity.

The purpose of this task is to ask students to write expressions and to consider what it means for two expressions to be equivalent.

This short video and interactive assessment activity is designed to teach fifth graders about identifying the properties of rectangles.

This short video and interactive assessment activity is designed to teach third graders an overview of squares and rectangles.

Students learn about material reuse by designing and building the strongest and tallest towers they can, using only recycled materials. They follow design constraints and build their towers to withstand earthquake and high wind simulations.

Students take advantage of the natural ability of red cabbage juice to perform as a pH indicator to test the pH of seven common household liquids. Then they evaluate the accuracy of the red cabbage indicator, by testing the pH of the liquids using an engineer-designed tool, pH indicator strips. Like environmental engineers working on water remediation or water treatment projects, understanding the chemical properties (including pH) of contaminants is important for safeguarding the health of environmental water sources and systems.

Building upon their understanding of forces and Newton's laws of motion, students learn about the force of friction, specifically with respect to cars. They explore the friction between tires and the road to learn how it affects the movement of cars while driving. In an associated literacy activity, students explore the theme of conflict in literature, and the difference between internal and external conflict, and various types of conflicts. Stories are used to discuss methods of managing and resolving conflict and interpersonal friction.

This lesson will start with a brief history of robotics and explain how robots are beneficial to science and society. The lesson then will explore how robots have been used in recent space exploration efforts. The engineering design of the two Mars rovers, Spirit and Opportunity, will be used as prime examples. Finally, the maneuverability of their robotic arms and the functionality of their tools will be discussed.

Red Seal Landscape Horticulturist Identify Plants and Plant Requirements is an adaptation of KPU HORT 1155 Introduction to Plant Materials Lecture Notes. This first edition supports student achievement of the Level 1 and 2 learning goals for Red Seal Landscape Horticulturist Line F2.

This task is written so that students have opportunities to use different strategies to determine whether a set has an even or odd number of objects.

Het vak Redeneren en Logica gaat over redeneringen en hun geldigheid. Een redenering bestaat uit een aantal premissen, en een conclusie. Een redenering is geldig wanneer de conclusie altijd waar is wanneer de premissen dat zijn. Het kan, wanneer een redenering geldig is, dus niet voorkomen dat de premissen waar zijn, en de conclusie onwaar. Zo'n situatie heet een tegenvoorbeeld, en dat toont aan dat een redenering ongeldig is. Wanneer een redenering geldig is, heet hij een stelling ("theorem" in het engels), en kan men de conclusie afleiden uit de aannanme dat de premissen waar zijn. Zo'n afleiding heet een bewijs.